谈美国《化学文摘》光盘数据库主题检索方式

On The Descriptor Retrieval Means of CA on CD

目的:探讨美国《化学文摘》光盘数据库(CA on CD)的主题检索方式。方法:概述CA on CD的4种基本检索方式,并举例说明其各自的优点及局限性。结果与结论:CA on CD是医药学及化学工作者不可或缺的数据库之一,而主题检索方式具有较高的查全率和查准率,在实际工作中可作为首选。

OBJECTIVE： To inquired the descriptor retrieval means of CA on CD.METHODS： This paper firstly introduced the four basic retrieval methods of CA on CD, then it discussed its descriptor retrieval means by examples. In the end,it put forward the limitations of it.RESULTS ＆ CONCLUSION： CA on CD is the fundamental database for medicinal worker and its descriptor retrieval means has very high recall and precision ratio,so we should choose this means first.